--- /mnt/data/server(4).mjs	2026-08-03 01:31:41.230787575 +0000
+++ /mnt/data/whatsapp_membership_inbound_fix_v1.3.1/server.mjs	2026-08-03 01:32:06.622788324 +0000
@@ -1,4 +1,5 @@
 import 'dotenv/config'
+import { installMembershipInbound } from './membership-inbound.mjs'
 import express from 'express'
 import helmet from 'helmet'
 import pino from 'pino'
@@ -499,6 +500,14 @@
 
     record.socket = sock
 
+    /* WMO_MEMBERSHIP_INBOUND_START */
+    installMembershipInbound({
+      sock,
+      sessionId: id,
+      logger: logger.child({ sessionId: id, feature: 'membership-optin' }),
+    })
+    /* WMO_MEMBERSHIP_INBOUND_END */
+
     sock.ev.on('creds.update', saveCreds)
     sock.ev.on('messages.update', (updates) => {
       for (const item of updates || []) {